Stainless Steel 1.4449-CD vs 1.4449 CW3/4H
Stainless Steel · 1.4449 temper comparison
1.4449-CD and 1.4449 CW3/4H are two conditions of the same stainless steel grade, 1.4449: CD (cold drawn) versus CW3/4H (3/4 Hard). The chemistry is identical, so every difference below comes from the condition. 1.4449 CW3/4H is the stronger of the two: yield strength 800 MPa (116 ksi) against 450 MPa (65.3 ksi) for 1.4449-CD, about 78% more; tensile strength follows at 1,030 MPa (149 ksi) vs 690 MPa (100 ksi). In exchange, 1.4449-CD is the more ductile: elongation 25% versus 8% for 1.4449 CW3/4H, and 1.4449 CW3/4H is harder (310 HB vs 210 HB). 1.4449-CD runs hotter in service (425°C vs 300°C continuous). On the shop floor, 1.4449-CD welds better (very good vs good).
1.4449-CDChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
1.4449 CW3/4HChoose it when strength drives the design.
1.4449-CD vs 1.4449 CW3/4H: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all stainless steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all stainless steel grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Shear Modulus 77 GPa11.2 Msi · Bulk Modulus 160 GPa23.2 Msi · Poisson's Ratio 0.3
Physical
Density and transition temperatures.
Same in both: Density 8 g/cm³0.29 lb/in³ · Melting Point (Solidus) 1,370°C2,498 °F · Liquidus Temperature 1,400°C2,552 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 15 W/m·K8.7 BTU/hr·ft·°F · Specific Heat Capacity 500 J/kg·K0.12 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 16 µm/m·K8.9 µin/in·°F · Latent Heat of Fusion 270 J/g116 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 2.3 % IACS · Electrical Resistivity 7.5×10⁻⁷ Ω·m29.5 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.05 V · Corrosion Resistance 74 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Castability 45 / 100 · Brazeability / Solderability 60 / 100 · Polishability 80 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 53 MJ/kg22,786 BTU/lb · Embodied Carbon (primary production) 4.6 kg CO₂/kg · Embodied Water 120 L/kg14.4 gal/lb · Typical Recycled Content 60%
Strength versus weight
Yield strength against density for every stainless steel grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
1.4449-CD vs 1.4449 CW3/4H — frequently asked
Is 1.4449 CW3/4H stronger than 1.4449-CD?
Yes. 1.4449 CW3/4H has a typical yield strength of 800 MPa (116 ksi) against 450 MPa (65.3 ksi) for 1.4449-CD — about 78% more. Tensile strength is 1,030 MPa (149 ksi) vs 690 MPa (100 ksi).
Which condition does FabDigit quote by default, CD or CW3/4H?
AT is the default 1.4449 condition in the FabDigit quote flow (neither CD nor CW3/4H). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which welds better, 1.4449-CD or 1.4449 CW3/4H?
1.4449-CD. Its weldability rates very good (80/100) against good (65/100) for 1.4449 CW3/4H.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1.4449-CD and 1.4449 CW3/4H side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.